\section{User Testing}\label{sec_testing}

\subsection{Game Testing}\label{sec_testing}
The game was given two release cycles.  The aim of the first was a limited release to discover any usabilty issues or 

this allowed me to gauge the level of participantion, which would provide information on how many images should be added in the final release.

This release contained far more images than in the final release.  This was done to identify images which matched the critera 

\subsection{CAPTCHA Testing}\label{sec_testing}
The requirements were filtered into an initial prototype which focused on the 

before final testing.  This made the
and also excluded this 

\section{User Studies}
To aid in the aim of providing a usability 
\subsection{Initial game}
The game was released in-order to perform beta testing of the product.  The Beta testing of the 

\subsection{Final game}
 This is due to the same techniques which automated programs known as "bots" employ a similar methods to screen readers and other tools which people with disabilities use to access information.


\subsection{Requirements}
It was discovered through interview that the precision of the language used to describe the 
\subsection{Mockup Of }
To validate the requirements a generated mock up of the CAPTCHA was created, 

this was important as the perceptual 

this was done to validate the layout of the CAPTCHA.  It was found that 

